Pedestal-extension-table lock.



PATEN'TED DEC. 15, 1903.

0. S. BURTON. PEDESTAL EXTENSION TABLE LOOK.

APPLICATION FILED MAR. 10, 1903.

N0 MODEL.

who starts Fatented December 15, 1903.

ATJENT rricn.

CHARLES S. BURTON, OF OAKPARK, ILLINOIS, ASSIGNOR TO EMIL TYDEN, OF HASTINGS, MICHIGAN.

PEDESTAL-=-EXTENSlON TABLIE LOCK.

SPECIFICATION forming part of Letters Patent No. 747,131, dated December 15, 1903.

Application filed March 10,1903. Serial No. 147,053. (No model.)

To all whom it mag concern:

Be it known that 1, CHARLES S. BURTON, a citizen of the United States, residing at No. 328 Wisconsin avenue, Oakpark, in the county of Cook and State of Illinois, have invented new and useful Improvements in Pedestal-Extension-Table Locks, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

This invention relates to extension-tables Whose separable members are supported by a pedestal divided and having one portion moving with each member of the table; and it consists in the improvements in devices for :5 drawing and locking the two parts together,

which are set out in the claims.

In the drawings, Figure 1 is a vertical longitudinal section of a portion of a pedestal extension-table having one form of my invention, the parts being shown in position occupied after the locking devices are engaged, but before the two members of the table are drawn together. Fig. 2 is a section at the line 2 2 on Fig. 1. Fig. 3 is a view similar to Fig. 1, showing the table and pedestal members closed together. Fig. 4 is a detail section at the line 4 4 on Fig. 3. Fig. 5 is a detail section at the line 5 5 on Fig. 2. Fig. 6 is a detail inner face elevation of a portion of one of the operating-levers.

Upon one member of the table, including its pedestal member 1, there are mounted devices, hereinafter described in detail, which comprise latches or books 2 2 at the top and bottom, respectively, of the pedestal, and on the other member of the table there are provided studs 3 3, with which the hooks, respectively, may engage. The two hooks or latches 2 and 2 are connected to the upper and lower ends, respectively, of a lever 4, which extends vertically within one member of the pedestal and is pivoted at a point intermediate its ends to the lever 5, the latter lever being pivoted at its lower end to the pedestal member, preferably near the foot of the latter, a bracket 6 being provided for that purpose. To the upper end of the lever 5 there is connected at pull-rod 7, which extends oif toward one end of the table, where it may be provided with an operating and cramping lever 8, adapted to rock over its fulcrum, so as to thrust the rod 7 inward or draw it back toward the end of the table and to hold it locked in the latter position by carrying the pivot of the link to the lever up past the fulcrum of the lever and there stopping it against further movement in that direction. The two hooks or latches 2 and 2 are connected bya light rod 9, and the upper hook has a tailpiece or projection 10, extending up and in position to encounter an abutment, such as a small block 12, mounted on the lower side of the table-top, said block being in position to be thus encountered by the tail 10 when the lever 4 is carried inward somewhat farther than the position shown in Fig. 1, the lever 8 being adapted when thrown forward to its extreme position to operate the lovers 5 and 4, so as to carry the latch to position for such encounter, thus causing it to be lifted out of engagement with the stud 3 and to carry up the other latch 2 out of engagement with its stud 3. In the position of the lever 8, to which it will fall by gravity, the latches are in position such that their inclined noses 12 12 will collide with the studs 3 3 as the table members are closed together and riding upon said studs will drop into engaged position, as seen in Fig. l. The lever 8 being now pulled for ward to position shown in Fig. 3 will draw the lever 5 back at the upper end, carrying back the lever 4 at the pivotal connection of the two levers, causing both hooks to operate on the studs to which they are engaged to draw the table member having said studs up to the member on which the levers are mounted, and the parts will be so proportioned that by the time the table members are closed together the lever 8 is swung around to its locked position, as seen in Fig. 3. Any means for pulling the upper end of the lever 5 outward and securing it will serve the same purpose, and I do not limit myself to the means shown, nor do I claim this means specifically, my invention consisting not in the particular means for operating the lever 5, but in the structure which comprises the means of connecting the two members of the table at the top and bottom and operating on both connections by one operating means to draw the table together at both top and bottom.

The relation between the movement given the rod 7 by the devices for thrusting it and retracting it and the pull or drawing movement of the hooks 2 and 2 may be varied as the needs of the case may require by varying the position of the pivotal connection between the two levers 4 and 5, and for this purpose I have shown this pivot adjustable in the length of the two levers, which have slots 4* and 5*, respectively, for the pivotbolt 14, which has a rigid boss 14 midwayin its length and has one end threaded to receive a nut 15, while the other end receives a cotter-pin 17. The threaded end is inserted through the slot in the lever 5 and made fast at desired position by the nut. A ring 16, lodged on the boss 14 has teeth 16,which engage the inner face of the lever 4 when that lever is passed onto the opposite end of the bolt and retained by the cotter-pin. The lovers 4 if made of metal will have apertures 4; to receive the teeth 16; but when made of wood, as designed to be illustrated, will be engaged by said teeth, which may be suitably sharp for the purpose. The ring 16 thus furnishes a bearing for the lever 4: on the boss of the pivot-bolt wherever said bolt is set in the length of the slots.

I have described the hooks 2 and 2 by reference to only one such hook at top and bottom, respectively; but for convenience in avoiding the center leg and for greater security in locking it is preferable to employ such hooks in pairs at opposite sides of the center leg, rigidly connected together and preferably formed integrally. When only one hook is employed, it is at the middle of the width of the pedestal, and the center leg 13 is apertured, as shown at 13*, to accommodate it.

In an application by me filed November 11, 1903, Serial No. 180,780, which is a renewal of my application filed March 10, 1903, Serial No.147,052, I have claimed, broadly, the combination of devices located at the upper and at the lower parts, respectively, of the pedestal, comprising elements on the two members, respectively, for engaging and drawing together the pedestal members when the elements of said two devices on one pedestal member are connected by a vertically-disposed rod or bar, combined with means for moving it in direction to engage the devices and draw the pedestal members together, and I do not in this case, therefore, claim said invention thus broadly.

I claim- 1. In a pedestal extension-table, in combination with the separable members of the table and the pedestal members pertaining thereto, locking devices at the upper and lower en ds of the pedestal respectively,saiddevices each comprising cooperating elements,

one on each member, adapted to be engaged when the members approach; a lever which connects the top and bottom elements on one member; means mounted on said member for moving said lever in direction to draw the members together when said locking devices are engaged, and means for securing it at the locked position of the members.

2. In a pedestal extension-table, in combination with the separable table members and their respective pedestal members, devices at the upper and lower ends of the pedestal for locking and drawing the members together, said devices each comprising two elements, one on each member, adapted to be engaged when the members approach; a lever which connects the top and bottom elements on one member, and means mounted on said memher for moving said lever in direction to draw the members together, and for looking it at closed position of the members, said means being pivotally connected to said lever intermediate its ends.

3. In a pedestal extension-table, in combination with the separable members of the table and their respective pedestal members,

devices for connecting and locking together said members at top and bottom of the pedestal, said devices each comprising two elements, one on each member, adapted to be engaged when the members approach; a lever which connects the top and bottom elements on one member; an operating-lever fulcrumed on said member and pivotally connected to said first-mentioned lever intermediate the ends of the latter, said operating-lever being extended upward from its fulcrum,and means at the upper end extending 01f toward the end of the table for operating the lever to draw the pedestal members together after the locking devices are engaged.

4. In a pedestal extension-table, in combination with the separable table members and their respective pedestal members, devices at the top and bottom of the pedestal forconnecting and drawing together the two members, said devices each comprising a latch carried on one member, and means for engaging the latch carried by the other member; a lever connecting the top and bottom latches; means mounted on the member having said latches for supporting the lever and moving it in direction to draw the members together when the latches are both engaged with their respective cooperating parts on the other member; a link connecting said latches, one of the latches having a tailpiece, and an abutment on the table member to which the latches pertain in position to encounter said tailpiece when the latch carrying lever is moved in direction to permit the separation of the table members, to cause the latches to be disengaged from their cooperating elements.

5. In a pedestal extension-table, in combination with the separable members and their respective pedestal members, locking devices IIO the length of both to vary the relative movement of the latches in the direction for drawing the members together.

In testimony whereof I have hereunto set my hand, in the presence of two witnesses, at Ohicago, Illinois, this 27th day of January,

CHARLES S. BURTON.

In presence of M. GERTRUDE ADY, FREDK. G. FISCHER. 

